Related parties - Summary of Compensation to Key Management Personnel (Detail) - EUR (€)	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disclosure of transactions between related parties [abstract]
Short term employee benefits	€ 1,300,557	€ 1,092,741	€ 2,661,986	€ 2,176,182
Post employee benefits	62,130	43,090	126,189	93,521
Share-based payments	2,088,045	1,699,794	3,400,920	3,224,788
Total	€ 3,450,732	€ 2,835,625	€ 6,189,095	€ 5,494,491

No definition available.

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- Definition

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

+ References

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- Definition

The amount of compensation to key management personnel in the form of post-employment benefits. [Refer: Key management personnel of entity or parent [member]]

+ References

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- Definition

The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

+ References

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